Hoshizaki F-80 I MAH (-c), F-80 I MWH (-c) When replacing the evaporator, b Replace the drier

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27)When replacing the evaporator;

26) Assemble the removed parts in the reverse order of the above procedure.

WARNING

Be careful not to scratch the surface of the O-ring, or it may cause water leaks. Handle the mechanical seal with care not to scratch nor to contaminate its contact surface.

27)When replacing the evaporator;

(a)Braze the new evaporator with nitrogen gas flowing at the pressure of 3 - 4 PSIG.

(b)Replace the drier.

(c)Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.

(d)Evacuate the system. Charge it with refrigerant. For the air-cooled and water-cooled models, see the nameplate for required refrigerant charge and type. For the remote air-cooled models, see the label on the control box.

28)Move the flush switch to the "ICE" position.

29)Replace the panels in their correct position.

30)Turn on the power supply.

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Contents HoshizakiHoshizaki America, Inc Number Issued Revised“A Superior Degree of Reliability” Modular Flaker Models F-801MAH-C F-801MWH-CAttn HOSHIZAKI Technical Support Department Phone 1-800-233-1940 Technical Service 770 487-2331 FaxComplete and detailed explanation of the problem HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GACONTENTS 9. Removal and Replacement of Control Water Valve 5. Removal and Replacement of Expansion Valve7. Removal and Replacement of Evaporator Assembly 8. Removal and Replacement of Fan MotorF-801MAH I. Specification 1. IcemakerF-801MWH F-801MAH-C F-801MWH-C F-801MAH/-C II. General Information 1. ConstructionWater Supply Inlet Junction Box Water Regulator Compressor Drier F-801MWH/-CGEAR MOTOR 2. Control Box LayoutRUN CAPACITOR CONTROL TIMERFLUSH III. Technical Information 1. Water Circuit and Refrigeration Circuit F-801MWH/-C F-801MAH/-C, F-801MWH/-C 2. Wiring Diagrams3. Sequence of Electrical Circuit b When reservoir has been filled, gear motor starts immediately c Compressor starts about 60 sec. after gear motor starts Page e Low water except water-cooled model Page Page h When flush timer operates for 15 min. every 12 hours Page Page Proper wiring. The unit starts 4. Timing ChartMiswiring. Circuit Protect Relay operates 60 sec 150 sec1 sec 1. CIRCUIT PROTECT RELAY 2. WATER LEVEL UPPER 3. FLOAT SWITCH LOWER 5. Performance Data WATER FLOW FOR CONDENSER F-801MAH-C F-801MWH-C 1. Adjustment of Water Regulating Valve water-cooled model only IV. Adjustment of Components2. Adjustment of Flake Size REMEDY V. Service Diagnosis 1. No Ice ProductionPROBLEM POSSIBLE CAUSEREMEDY REMEDY PROBLEM2. Low Ice Production POSSIBLE CAUSE3. Other b Evacuation and Recharge R-404A VI. Removal and Replacement of Components1. Service for Refrigerant Lines a Refrigerant Recovery2. Brazing DANGER 3. Removal and Replacement of Compressor 4. Removal and Replacement of Drier 5. Removal and Replacement of Expansion Valve Page Auger 7. Removal and Replacement of Evaporator AssemblyCutter Extruding HeadGear Motor Bearing-Lower and Mechanical Seal30 Turn on the power supply 27 When replacing the evaporatorc Check for leaks using nitrogen gas 140 PSIG and soap bubbles 28 Move the flush switch to the ICE positionSocket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier Auger Mechanical Seal O-ring Bearing Lower Bolt WasherCoupling - Spline Rubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer9. Removal and Replacement of Control Water Valve 8. Removal and Replacement of Fan Motor10. Removal and Replacement of Flush Water Valve 1. Preparing the Icemaker for Long Storage VII. Cleaning and Maintenancea Cleaning Solution 2. Cleaning and Sanitizing Instructionsb Cleaning Procedure d Sanitizing Procedure - Initial c Sanitizing Solutione Sanitizing Procedure - Final 22 Turn on the power supply and start the automatic icemaking process 18 Move the flush switch to the “ICE” position and run the icemaker19 Turn off the power supply after 30 minutes 21 Flush out any solution from the storage bin3. Maintenance 4 Condenser except water-cooled model 3 Air Filter air-cooled model only